Mesothelioma

I've encountered a word today that I don't know its meaning. Good, that there's Google to turn to when we want to search for something.

So, here is what I found about Mesothelioma.

Mesothelioma is a form of cancer that is almost always caused by previous exposure to asbestos. In this disease, malignant cells develop in the mesothelium, a protective lining that covers most of the body's internal organs. Its most common site is the pleura (outer lining of the lungs and internal chest wall), but it may also occur in the peritoneum (the lining of the abdominal cavity), the heart,^[1]the pericardium (a sac that surrounds the heart) or tunica vaginalis.